Home / 149,814.28-206,826.72-102,137.68

Finding the Fourth Proportional to 149,814.28, 206,826.72 and 102,137.68

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Solution

The fourth proportional to 149,814.28, 206,826.72 and 102,137.68 is: 141,006.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,814.28 : 206,826.72 = 102,137.68 : x
  2. Step 2: Convert to fraction form
    149,814.28/206,826.72 = 102,137.68/x
  3. Step 3: Cross multiply
    149,814.28x = 206,826.72 × 102,137.68
  4. Step 4: Simplify right side
    149,814.28x = 21,124,801,342.81
  5. Step 5: Solve for x
    x = 21,124,801,342.81/149,814.28
  6. Step 6: Final answer
    x = 141,006.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.